Construction and mapping of compact uplink control information (uci) over physical uplink shared channel (pusch)

ABSTRACT

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine to transmit a compact uplink control information (UCI) that identifies one or more parameters associated with a transmission of a physical uplink shared channel (PUSCH) communication in a PUSCH resource unit (PRU). The UE may transmit the UCI in the PRU based at least in part on a semi-static payload construction and resource mapping rule. Numerous other aspects are provided.

CROSS-REFERENCE TO RELATED APPLICATION

This patent application claims priority to U.S. Provisional PatentApplication No. 62/880,712, filed on Jul. 31, 2019, entitled“CONSTRUCTION AND MAPPING OF COMPACT UPLINK CONTROL INFORMATION (UCI)OVER PHYSICAL UPLINK SHARED CHANNEL (PUSCH),” and assigned to theassignee hereof. The disclosure of the prior application is consideredpart of and is incorporated by reference into this patent application.

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wirelesscommunication and to techniques and apparatuses for constructing,mapping and transmitting compact uplink control information (UCI) in asemi-static way over a physical uplink shared channel (PUSCH).

BACKGROUND

Wireless communication systems are widely deployed to provide varioustelecommunication services such as telephony, video, data, messaging,and broadcasts. Typical wireless communication systems may employmultiple-access technologies capable of supporting communication withmultiple users by sharing available system resources (e.g., bandwidth,transmit power, and/or the like). Examples of such multiple-accesstechnologies include code division multiple access (CDMA) systems, timedivision multiple access (TDMA) systems, frequency-division multipleaccess (FDMA) systems, orthogonal frequency-division multiple access(OFDMA) systems, single-carrier frequency-division multiple access(SC-FDMA) systems, time division synchronous code division multipleaccess (TD-SCDMA) systems, and Long Term Evolution (LTE).LTE/LTE-Advanced is a set of enhancements to the Universal MobileTelecommunications System (UMTS) mobile standard promulgated by theThird Generation Partnership Project (3GPP).

A wireless communication network may include a number of base stations(BSs) that can support communication for a number of user equipment(UEs). A user equipment (UE) may communicate with a base station (BS)via the downlink and uplink. The downlink (or forward link) refers tothe communication link from the BS to the UE, and the uplink (or reverselink) refers to the communication link from the UE to the BS. As will bedescribed in more detail herein, a BS may be referred to as a Node B, agNB, an access point (AP), a radio head, a transmit receive point (TRP),a New Radio (NR) BS, a 5G Node B, and/or the like.

The above multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent user equipment to communicate on a municipal, national,regional, and even global level. New Radio (NR), which may also bereferred to as 5G, is a set of enhancements to the LTE mobile standardpromulgated by the Third Generation Partnership Project (3GPP). NR isdesigned to better support mobile broadband Internet access by improvingspectral efficiency, lowering costs, improving services, making use ofnew spectrum, and better integrating with other open standards usingorthogonal frequency division multiplexing (OFDM) with a cyclic prefix(CP) (CP-OFDM) on the downlink (DL), using CP-OFDM and/or SC-FDM (e.g.,also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) onthe uplink (UL), as well as supporting beamforming, multiple-inputmultiple-output (MIMO) antenna technology, and carrier aggregation.However, as the demand for mobile broadband access continues toincrease, there exists a need for further improvements in LTE and NRtechnologies. Preferably, these improvements should be applicable toother multiple access technologies and the telecommunication standardsthat employ these technologies.

SUMMARY

In some aspects, a method of wireless communication, performed by a userequipment (UE), may include determining to transmit uplink controlinformation (UCI) that identifies one or more parameters associated witha transmission of a physical uplink shared channel (PUSCH) communicationin a PUSCH resource unit (PRU); and transmitting the UCI in the PRUbased at least in part on determining to transmit the UCI.

In some aspects, a UE for wireless communication may include memory andone or more processors coupled with the memory. The memory and the oneor more processors may be configured to determine to transmit UCI thatidentifies one or more parameters associated with a transmission of aPUSCH communication in a PRU and transmit the UCI in the PRU based atleast in part on determining to transmit the UCI.

In some aspects, a non-transitory computer-readable medium may store oneor more instructions for wireless communication. The one or moreinstructions, when executed by one or more processors of a UE, may causethe one or more processors to: determine to transmit UCI that identifiesone or more parameters associated with a transmission of a PUSCHcommunication in a PRU and transmit the UCI in the PRU based at least inpart on determining to transmit the UCI.

In some aspects, an apparatus for wireless communication may includemeans for determining to transmit UCI that identifies one or moreparameters associated with a transmission of a PUSCH communication in aPRU and means for transmitting the UCI in the PRU based at least in parton determining to transmit the UCI.

Aspects generally include a method, apparatus, system, computer programproduct, non-transitory computer-readable medium, user equipment, basestation, wireless communication device, and/or processing system assubstantially described herein with reference to and as illustrated bythe accompanying drawings and specification.

The foregoing has outlined rather broadly the features and technicaladvantages of examples according to the disclosure in order that thedetailed description that follows may be better understood. Additionalfeatures and advantages will be described hereinafter. The conceptionand specific examples disclosed may be readily utilized as a basis formodifying or designing other structures for carrying out the samepurposes of the present disclosure. Such equivalent constructions do notdepart from the scope of the appended claims. Characteristics of theconcepts disclosed herein, both their organization and method ofoperation, together with associated advantages will be better understoodfrom the following description when considered in connection with theaccompanying figures. Each of the figures is provided for the purposesof illustration and description, and not as a definition of the limitsof the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the above-recited features of the present disclosure can beunderstood in detail, a more particular description, briefly summarizedabove, may be had by reference to aspects, some of which are illustratedin the appended drawings. It is to be noted, however, that the appendeddrawings illustrate only certain typical aspects of this disclosure andare therefore not to be considered limiting of its scope, for thedescription may admit to other equally effective aspects. The samereference numbers in different drawings may identify the same or similarelements.

FIG. 1 is a block diagram conceptually illustrating an example of awireless communication network, in accordance with various aspects ofthe present disclosure.

FIG. 2 is a block diagram conceptually illustrating an example of a basestation in communication with a user equipment (UE) in a wirelesscommunication network, in accordance with various aspects of the presentdisclosure.

FIG. 3A is a block diagram conceptually illustrating an example of aframe structure in a wireless communication network, in accordance withvarious aspects of the present disclosure.

FIG. 3B is a block diagram conceptually illustrating an examplesynchronization communication hierarchy in a wireless communicationnetwork, in accordance with various aspects of the present disclosure.

FIG. 4 is a block diagram conceptually illustrating an example slotformat with a normal cyclic prefix, in accordance with various aspectsof the present disclosure.

FIGS. 5-8 are diagrams illustrating examples of transmitting uplinkcontrol information (UCI) over a physical uplink shared channel (PUSCH),in accordance with various aspects of the present disclosure.

FIG. 9 is a diagram illustrating an example process performed, forexample, by a UE, in accordance with various aspects of the presentdisclosure.

DETAILED DESCRIPTION

Various aspects of the disclosure are described more fully hereinafterwith reference to the accompanying drawings. This disclosure may,however, be embodied in many different forms and should not be construedas limited to any specific structure or function presented throughoutthis disclosure. Rather, these aspects are provided so that thisdisclosure will be thorough and complete, and will fully convey thescope of the disclosure to those skilled in the art. Based on theteachings herein one skilled in the art should appreciate that the scopeof the disclosure is intended to cover any aspect of the disclosuredisclosed herein, whether implemented independently of or combined withany other aspect of the disclosure. For example, an apparatus may beimplemented or a method may be practiced using any number of the aspectsset forth herein. In addition, the scope of the disclosure is intendedto cover such an apparatus or method which is practiced using otherstructure, functionality, or structure and functionality in addition toor other than the various aspects of the disclosure set forth herein. Itshould be understood that any aspect of the disclosure disclosed hereinmay be embodied by one or more elements of a claim.

Several aspects of telecommunication systems will now be presented withreference to various apparatuses and techniques. These apparatuses andtechniques will be described in the following detailed description andillustrated in the accompanying drawings by various blocks, modules,components, circuits, steps, processes, algorithms, and/or the like(collectively referred to as “elements”). These elements may beimplemented using hardware, software, or combinations thereof. Whethersuch elements are implemented as hardware or software depends upon theparticular application and design constraints imposed on the overallsystem.

It should be noted that while aspects may be described herein usingterminology commonly associated with 3G and/or 4G wireless technologies,aspects of the present disclosure can be applied in othergeneration-based communication systems, such as 5G and later, includingNR technologies.

FIG. 1 is a diagram illustrating a wireless network 100 in which aspectsof the present disclosure may be practiced. The wireless network 100 maybe an LTE network or some other wireless network, such as a 5G or NRnetwork. The wireless network 100 may include a number of BSs 110 (shownas BS 110 a, BS 110 b, BS 110 c, and BS 110 d) and other networkentities. ABS is an entity that communicates with user equipment (UEs)and may also be referred to as a base station, a NR BS, a Node B, a gNB,a 5G node B (NB), an access point, a transmit receive point (TRP),and/or the like. Each BS may provide communication coverage for aparticular geographic area. In 3GPP, the term “cell” can refer to acoverage area of a BS and/or a BS subsystem serving this coverage area,depending on the context in which the term is used.

A BS may provide communication coverage for a macro cell, a pico cell, afemto cell, and/or another type of cell. A macro cell may cover arelatively large geographic area (e.g., several kilometers in radius)and may allow unrestricted access by UEs with service subscription. Apico cell may cover a relatively small geographic area and may allowunrestricted access by UEs with service subscription. A femto cell maycover a relatively small geographic area (e.g., a home) and may allowrestricted access by UEs having association with the femto cell (e.g.,UEs in a closed subscriber group (CSG)). ABS for a macro cell may bereferred to as a macro BS. ABS for a pico cell may be referred to as apico BS. A BS for a femto cell may be referred to as a femto BS or ahome BS. In the example shown in FIG. 1, a BS 110 a may be a macro BSfor a macro cell 102 a, a BS 110 b may be a pico BS for a pico cell 102b, and a BS 110 c may be a femto BS for a femto cell 102 c. A BS maysupport one or multiple (e.g., three) cells. The terms “eNB”, “basestation”, “NR BS”, “gNB”, “TRP”, “AP”, “node B”, “5G NB”, and “cell” maybe used interchangeably herein.

In some aspects, a cell may not necessarily be stationary, and thegeographic area of the cell may move according to the location of amobile BS. In some aspects, the BSs may be interconnected to one anotherand/or to one or more other BSs or network nodes (not shown) in thewireless network 100 through various types of backhaul interfaces suchas a direct physical connection, a virtual network, and/or the likeusing any suitable transport network.

Wireless network 100 may also include relay stations. A relay station isan entity that can receive a transmission of data from an upstreamstation (e.g., a BS or a UE) and send a transmission of the data to adownstream station (e.g., a UE or a BS). A relay station may also be aUE that can relay transmissions for other UEs. In the example shown inFIG. 1, a relay station 110 d may communicate with macro BS 110 a and aUE 120 d in order to facilitate communication between BS 110 a and UE120 d. A relay station may also be referred to as a relay BS, a relaybase station, a relay, and/or the like.

Wireless network 100 may be a heterogeneous network that includes BSs ofdifferent types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, and/orthe like. These different types of BSs may have different transmit powerlevels, different coverage areas, and different impacts on interferencein wireless network 100. For example, macro BSs may have a high transmitpower level (e.g., 5 to 40 watts) whereas pico BSs, femto BSs, and relayBSs may have lower transmit power levels (e.g., 0.1 to 2 watts).

A network controller 130 may couple to a set of BSs and may providecoordination and control for these BSs. Network controller 130 maycommunicate with the BSs via a backhaul. The BSs may also communicatewith one another, e.g., directly or indirectly via a wireless orwireline backhaul.

UEs 120 (e.g., 120 a, 120 b, 120 c) may be dispersed throughout wirelessnetwork 100, and each UE may be stationary or mobile. A UE may also bereferred to as an access terminal, a terminal, a mobile station, asubscriber unit, a station, and/or the like. A UE may be a cellularphone (e.g., a smart phone), a personal digital assistant (PDA), awireless modem, a wireless communication device, a handheld device, alaptop computer, a cordless phone, a wireless local loop (WLL) station,a tablet, a camera, a gaming device, a netbook, a smartbook, anultrabook, a medical device or equipment, biometric sensors/devices,wearable devices (smart watches, smart clothing, smart glasses, smartwrist bands, smart jewelry (e.g., smart ring, smart bracelet)), anentertainment device (e.g., a music or video device, or a satelliteradio), a vehicular component or sensor, smart meters/sensors,industrial manufacturing equipment, a global positioning system device,or any other suitable device that is configured to communicate via awireless or wired medium.

Some UEs may be considered machine-type communication (MTC) or evolvedor enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEsinclude, for example, robots, drones, remote devices, sensors, meters,monitors, location tags, and/or the like, that may communicate with abase station, another device (e.g., remote device), or some otherentity. A wireless node may provide, for example, connectivity for or toa network (e.g., a wide area network such as Internet or a cellularnetwork) via a wired or wireless communication link. Some UEs may beconsidered Internet-of-Things (IoT) devices, and/or may be implementedas NB-IoT (narrowband internet of things) devices. Some UEs may beconsidered a Customer Premises Equipment (CPE). UE 120 may be includedinside a housing that houses components of UE 120, such as processorcomponents, memory components, and/or the like.

In general, any number of wireless networks may be deployed in a givengeographic area. Each wireless network may support a particular RAT andmay operate on one or more frequencies. A RAT may also be referred to asa radio technology, an air interface, and/or the like. A frequency mayalso be referred to as a carrier, a frequency channel, and/or the like.Each frequency may support a single RAT in a given geographic area inorder to avoid interference between wireless networks of different RATs.In some cases, NR or 5G RAT networks may be deployed.

In some aspects, two or more UEs 120 (e.g., shown as UE 120 a and UE 120e) may communicate directly using one or more sidelink channels (e.g.,without using a base station 110 as an intermediary to communicate withone another). For example, the UEs 120 may communicate usingpeer-to-peer (P2P) communications, device-to-device (D2D)communications, a vehicle-to-everything (V2X) protocol (e.g., which mayinclude a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure(V2I) protocol, and/or the like), a mesh network, and/or the like. Inthis case, the UE 120 may perform scheduling operations, resourceselection operations, and/or other operations described elsewhere hereinas being performed by the base station 110.

As indicated above, FIG. 1 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 1.

FIG. 2 shows a block diagram of a design 200 of base station 110 and UE120, which may be one of the base stations and one of the UEs in FIG. 1.Base station 110 may be equipped with T antennas 234 a through 234 t,and UE 120 may be equipped with R antennas 252 a through 252 r, where ingeneral T≥1 and R≥1.

At base station 110, a transmit processor 220 may receive data from adata source 212 for one or more UEs, select one or more modulation andcoding schemes (MCS) for each UE based at least in part on channelquality indicators (CQIs) received from the UE, process (e.g., encodeand modulate) the data for each UE based at least in part on the MCS(s)selected for the UE, and provide data symbols for all UEs. Transmitprocessor 220 may also process system information (e.g., for semi-staticresource partitioning information (SRPI) and/or the like) and controlinformation (e.g., CQI requests, grants, upper layer signaling, and/orthe like) and provide overhead symbols and control symbols. Transmitprocessor 220 may also generate reference symbols for reference signals(e.g., the cell-specific reference signal (CRS)) and synchronizationsignals (e.g., the primary synchronization signal (PSS) and secondarysynchronization signal (SSS)). A transmit (TX) multiple-inputmultiple-output (MIMO) processor 230 may perform spatial processing(e.g., precoding) on the data symbols, the control symbols, the overheadsymbols, and/or the reference symbols, if applicable, and may provide Toutput symbol streams to T modulators (MODs) 232 a through 232 t. Eachmodulator 232 may process a respective output symbol stream (e.g., fororthogonal frequency division multiplexing (OFDM) and/or the like) toobtain an output sample stream. Each modulator 232 may further process(e.g., convert to analog, amplify, filter, and upconvert) the outputsample stream to obtain a downlink signal. T downlink signals frommodulators 232 a through 232 t may be transmitted via T antennas 234 athrough 234 t, respectively. According to various aspects described inmore detail below, the synchronization signals can be generated withlocation encoding to convey additional information.

At UE 120, antennas 252 a through 252 r may receive the downlink signalsfrom base station 110 and/or other base stations and may providereceived signals to demodulators (DEMODs) 254 a through 254 r,respectively. Each demodulator 254 may condition (e.g., filter, amplify,downconvert, and digitize) a received signal to obtain input samples.Each demodulator 254 may further process the input samples (e.g., forOFDM and/or the like) to obtain received symbols. A MIMO detector 256may obtain received symbols from all R demodulators 254 a through 254 r,perform MIMO detection on the received symbols if applicable, andprovide detected symbols. A receive processor 258 may process (e.g.,demodulate and decode) the detected symbols, provide decoded data for UE120 to a data sink 260, and provide decoded control information andsystem information to a controller/processor 280. A channel processormay determine reference signal received power (RSRP), received signalstrength indicator (RSSI), reference signal received quality (RSRQ),channel quality indicator (CQI), and/or the like. In some aspects, oneor more components of UE 120 may be included in a housing.

On the uplink, at UE 120, a transmit processor 264 may receive andprocess data from a data source 262 and control information (e.g., forreports comprising RSRP, RSSI, RSRQ, CQI, and/or the like) fromcontroller/processor 280. Transmit processor 264 may also generatereference symbols for one or more reference signals. The symbols fromtransmit processor 264 may be precoded by a TX MIMO processor 266 ifapplicable, further processed by modulators 254 a through 254 r (e.g.,for DFT-s-OFDM, CP-OFDM, and/or the like), and transmitted to basestation 110. At base station 110, the uplink signals from UE 120 andother UEs may be received by antennas 234, processed by demodulators232, detected by a MIMO detector 236 if applicable, and furtherprocessed by a receive processor 238 to obtain decoded data and controlinformation sent by UE 120. Receive processor 238 may provide thedecoded data to a data sink 239 and the decoded control information tocontroller/processor 240. Base station 110 may include communicationunit 244 and communicate to network controller 130 via communicationunit 244. Network controller 130 may include communication unit 294,controller/processor 290, and memory 292.

Controller/processor 240 of base station 110, controller/processor 280of UE 120, and/or any other component(s) of FIG. 2 may perform one ormore techniques associated with transmitting uplink control information(UCI) over a physical uplink shared channel (PUSCH), as described inmore detail elsewhere herein. For example, controller/processor 240 ofbase station 110, controller/processor 280 of UE 120, and/or any othercomponent(s) of FIG. 2 may perform or direct operations of, for example,process 900 of FIG. 9 and/or other processes as described herein.Memories 242 and 282 may store data and program codes for base station110 and UE 120, respectively. In some aspects, memory 242 and/or memory282 may comprise a non-transitory computer-readable medium storing oneor more instructions for wireless communication. For example, the one ormore instructions, when executed by one or more processors of the basestation 110 and/or the UE 120, may perform or direct operations of, forexample, process 900 of FIG. 9 and/or other processes as describedherein. A scheduler 246 may schedule UEs for data transmission on thedownlink and/or uplink.

In some aspects, UE 120 may include means for determining to transmitUCI that identifies one or more parameters associated with atransmission of a PUSCH communication in a PUSCH resource unit (PRU),means for transmitting the UCI in the PRU based at least in part ondetermining to transmit the UCI, and/or the like. In some aspects, suchmeans may include one or more components of UE 120 described inconnection with FIG. 2, such as controller/processor 280, transmitprocessor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254,MIMO detector 256, receive processor 258, and/or the like.

As indicated above, FIG. 2 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 2.

FIG. 3A shows an example frame structure 300 for frequency divisionduplexing (FDD) in a telecommunications system (e.g., NR). Thetransmission timeline for each of the downlink and uplink may bepartitioned into units of radio frames (sometimes referred to asframes). Each radio frame may have a predetermined duration (e.g., 10milliseconds (ms)) and may be partitioned into a set of Z (Z≥1)subframes (e.g., with indices of 0 through Z−1). Each subframe may havea predetermined duration (e.g., 1 ms) and may include a set of slots(e.g., 2^(m) slots per subframe are shown in FIG. 3A, where m is anumerology used for a transmission, such as 0, 1, 2, 3, 4, and/or thelike). Each slot may include a set of L symbol periods. For example,each slot may include fourteen symbol periods (e.g., as shown in FIG.3A), seven symbol periods, or another number of symbol periods. In acase where the subframe includes two slots (e.g., when m=1), thesubframe may include 2L symbol periods, where the 2L symbol periods ineach subframe may be assigned indices of 0 through 2L−1. In someaspects, a scheduling unit for the FDD may be frame-based,subframe-based, slot-based, symbol-based, and/or the like.

While some techniques are described herein in connection with frames,subframes, slots, and/or the like, these techniques may equally apply toother types of wireless communication structures, which may be referredto using terms other than “frame,” “subframe,” “slot,” and/or the likein 5G NR. In some aspects, “wireless communication structure” may referto a periodic time-bounded communication unit defined by a wirelesscommunication standard and/or protocol. Additionally, or alternatively,different configurations of wireless communication structures than thoseshown in FIG. 3A may be used.

In certain telecommunications (e.g., NR), a base station may transmitsynchronization signals. For example, a base station may transmit aprimary synchronization signal (PSS), a secondary synchronization signal(SSS), and/or the like, on the downlink for each cell supported by thebase station. The PSS and SSS may be used by UEs for cell search andacquisition. For example, the PSS may be used by UEs to determine symboltiming, and the SSS may be used by UEs to determine a physical cellidentifier, associated with the base station, and frame timing. The basestation may also transmit a physical broadcast channel (PBCH). The PBCHmay carry some system information, such as system information thatsupports initial access by UEs.

In some aspects, the base station may transmit the PSS, the SSS, and/orthe PBCH in accordance with a synchronization communication hierarchy(e.g., a synchronization signal (SS) hierarchy) including multiplesynchronization communications (e.g., SS blocks), as described below inconnection with FIG. 3B.

FIG. 3B is a block diagram conceptually illustrating an example SShierarchy, which is an example of a synchronization communicationhierarchy. As shown in FIG. 3B, the SS hierarchy may include an SS burstset, which may include a plurality of SS bursts (identified as SS burst0 through SS burst B−1, where B is a maximum number of repetitions ofthe SS burst that may be transmitted by the base station). As furthershown, each SS burst may include one or more SS blocks (identified as SSblock 0 through SS block (b_(max_SS)−1), where b_(max_SS)−1 is a maximumnumber of SS blocks that can be carried by an SS burst). In someaspects, different SS blocks may be beam-formed differently. An SS burstset may be periodically transmitted by a wireless node, such as every Xmilliseconds, as shown in FIG. 3B. In some aspects, an SS burst set mayhave a fixed or dynamic length, shown as Y milliseconds in FIG. 3B.

The SS burst set shown in FIG. 3B is an example of a synchronizationcommunication set, and other synchronization communication sets may beused in connection with the techniques described herein. Furthermore,the SS block shown in FIG. 3B is an example of a synchronizationcommunication, and other synchronization communications may be used inconnection with the techniques described herein.

In some aspects, an SS block includes resources that carry the PSS, theSSS, the PBCH, and/or other synchronization signals (e.g., a tertiarysynchronization signal (TSS)) and/or synchronization channels. In someaspects, multiple SS blocks are included in an SS burst, and the PSS,the SSS, and/or the PBCH may be the same across each SS block of the SSburst. In some aspects, a single SS block may be included in an SSburst. In some aspects, the SS block may be at least four symbol periodsin length, where each symbol carries one or more of the PSS (e.g.,occupying one symbol), the SSS (e.g., occupying one symbol), and/or thePBCH (e.g., occupying two symbols).

In some aspects, the symbols of an SS block are consecutive, as shown inFIG. 3B. In some aspects, the symbols of an SS block arenon-consecutive. Similarly, in some aspects, one or more SS blocks ofthe SS burst may be transmitted in consecutive radio resources (e.g.,consecutive symbol periods) during one or more slots. Additionally, oralternatively, one or more SS blocks of the SS burst may be transmittedin non-consecutive radio resources.

In some aspects, the SS bursts may have a burst period, whereby the SSblocks of the SS burst are transmitted by the base station according tothe burst period. In other words, the SS blocks may be repeated duringeach SS burst. In some aspects, the SS burst set may have a burst setperiodicity, whereby the SS bursts of the SS burst set are transmittedby the base station according to the fixed burst set periodicity. Inother words, the SS bursts may be repeated during each SS burst set.

The base station may transmit system information, such as systeminformation blocks (SIBs) on a physical downlink shared channel (PDSCH)in certain slots. The base station may transmit control information/dataon a physical downlink control channel (PDCCH) in C symbol periods of aslot, where B may be configurable for each slot. The base station maytransmit traffic data and/or other data on the PDSCH in the remainingsymbol periods of each slot.

As indicated above, FIGS. 3A and 3B are provided as examples. Otherexamples may differ from what is described with regard to FIGS. 3A and3B.

FIG. 4 shows an example slot format 410 with a normal cyclic prefix. Theavailable time frequency resources may be partitioned into resourceblocks. Each resource block may cover a set of subcarriers (e.g., 12subcarriers) in one slot and may include a number of resource elements.Each resource element may cover one subcarrier in one symbol period(e.g., in time) and may be used to send one modulation symbol, which maybe a real or complex value.

An interlace structure may be used for each of the downlink and uplinkfor FDD in certain telecommunications systems (e.g., NR). For example, Qinterlaces with indices of 0 through Q−1 may be defined, where Q may beequal to 4, 6, 8, 10, or some other value. Each interlace may includeslots that are spaced apart by Q frames. In particular, interlace q mayinclude slots q, q+Q, q+2Q, etc., where q∈{0, . . . , Q−1}.

A UE may be located within the coverage of multiple BSs. One of theseBSs may be selected to serve the UE. The serving BS may be selectedbased at least in part on various criteria such as received signalstrength, received signal quality, path loss, and/or the like. Receivedsignal quality may be quantified by a signal-to-noise-and-interferenceratio (SNIR), or a reference signal received quality (RSRQ), or someother metric. The UE may operate in a dominant interference scenario inwhich the UE may observe high interference from one or more interferingBSs.

While aspects of the examples described herein may be associated with NRor 5G technologies, aspects of the present disclosure may be applicablewith other wireless communication systems. New Radio (NR) may refer toradios configured to operate according to a new air interface (e.g.,other than Orthogonal Frequency Divisional Multiple Access (OFDMA)-basedair interfaces) or fixed transport layer (e.g., other than InternetProtocol (IP)). In aspects, NR may utilize OFDM with a CP (hereinreferred to as cyclic prefix OFDM or CP-OFDM) and/or SC-FDM on theuplink, may utilize CP-OFDM on the downlink and include support forhalf-duplex operation using time division duplexing (TDD). In aspects,NR may, for example, utilize OFDM with a CP (herein referred to asCP-OFDM) and/or discrete Fourier transform spread orthogonalfrequency-division multiplexing (DFT-s-OFDM) on the uplink, may utilizeCP-OFDM on the downlink and include support for half-duplex operationusing TDD. NR may include Enhanced Mobile Broadband (eMBB) servicetargeting wide bandwidth (e.g., 80 megahertz (MHz) and beyond),millimeter wave (mmW) targeting high carrier frequency (e.g., 60gigahertz (GHz)), massive MTC (mMTC) targeting non-backward compatibleMTC techniques, and/or mission critical targeting ultra reliable lowlatency communications (URLLC) service.

In some aspects, a single component carrier bandwidth of 100 MHz may besupported. NR resource blocks may span 12 sub-carriers with asub-carrier bandwidth of 60 or 120 kilohertz (kHz) over a 0.1millisecond (ms) duration. Each radio frame may include 40 slots and mayhave a length of 10 ms. Consequently, each slot may have a length of0.25 ms. Each slot may indicate a link direction (e.g., DL or UL) fordata transmission and the link direction for each slot may bedynamically switched. Each slot may include DL/UL data as well as DL/ULcontrol data.

Beamforming may be supported and beam direction may be dynamicallyconfigured. MIMO transmissions with precoding may also be supported.MIMO configurations in the DL may support up to 8 transmit antennas withmulti-layer DL transmissions up to 8 streams and up to 2 streams per UE.Multi-layer transmissions with up to 2 streams per UE may be supported.Aggregation of multiple cells may be supported with up to 8 servingcells. Alternatively, NR may support a different air interface, otherthan an OFDM-based interface. NR networks may include entities such ascentral units or distributed units.

As indicated above, FIG. 4 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 4.

A UE may communicate with a BS on a wireless communication link byreceiving one or more downlink communications from the BS on a downlinkof the wireless communication link, transmitting one or more uplinkcommunications to the BS on an uplink of the wireless communicationlink, and/or the like. To transmit an uplink communication, the UE mayprocess payload data of the uplink communication (e.g., channel code thepayload data, rate match the payload data, scramble the payload data,modulate the payload data, and/or the like) based at least in part onone or more transmission parameters. The transmission parameters mayinclude a modulation coding scheme for modulating the payload data, aredundancy version for rate matching the payload data, a transport blocksize for the payload data, and/or the like.

In some cases, the BS may specify the transmission parameters to the UEsuch that the BS is aware of the transmission parameters. The BS maydemodulate, decode, and/or otherwise process the uplink communicationbased at least in part on the transmission parameters. In some cases,the BS may be unaware of transmission parameters that the UE used togenerate and/or transmit an uplink communication. For example, the BSmay provide the UE with a plurality of candidate transmission parametersfrom which the UE selects the transmission parameters for the uplinkcommunication. As another example, the UE may be provided with a table,on algorithm, and/or the like, which the UE may use to determine thetransmission parameters. As a result, the BS may attempt to process theuplink communication by iterating through candidate transmissionparameters in order to attempt to demodulate and/or decode the uplinkcommunication, which increases processing times of uplinkcommunications, increases consumption of memory and/or processingresources of the BS, and/or the like. Moreover, if the BS is unable todetermine the transmission parameters, the BS may be unable todemodulate, decode, and/or otherwise process the uplink communication,which may result in an increase in dropped uplink communications at theBS, an increase in the quantity of uplink retransmissions, and/or thelike.

Some aspects described herein provide techniques and apparatusesassociated with transmitting UCI over PUSCH. In some aspects, a UE maydetermine one or more transmission parameters for processing and/ortransmitting an uplink communication to a BS. The UE may transmit, tothe BS, an indication of the one or more transmission parameters in UCIassociated with the uplink communication. As an example, the uplinkcommunication may include a PUSCH communication that is transmitted in aPRU. A PRU may include a set of time-domain and/or frequency-domainresources configured to carry the PUSCH communication and an associateddemodulation reference signal (DMRS). In this case, the UE may determineone or more transmission parameters (e.g., modulation coding scheme,transport block size, redundancy version, and/or the like) forprocessing and/or transmitting the PUSCH communication, may generate UCIthat identifies the one or more transmission parameters, and maymultiplex the UCI, the PUSCH communication, and the associated DMRS inthe PRU.

In this way, the BS may receive the UCI, the PUSCH communication, andthe DMRS, may identify the one or more transmission parameters based atleast in part on the UCI, and may demodulate, decode, and/or otherwiseprocess the PUSCH communication based at least in part on the one ormore transmission parameters, DMRS, and/or the like. This increases theefficiency of processing the uplink communication at the BS (e.g., byreducing demodulation and/or decoding attempts based at least in part oncandidate transmission parameters), decreases dropped and/or delayeduplink communications, decreases retransmissions, and/or the like.

FIG. 5 is a diagram illustrating one or more examples 500 oftransmitting UCI over PUSCH, in accordance with various aspects of thepresent disclosure. As shown in FIG. 5, examples 500 may includecommunication between a UE (e.g., UE 120) and a BS (e.g., BS 110). Insome aspects, the BS and the UE may be included in a wireless network,such as wireless network 100 and/or another wireless network. The BS andthe UE may communicate via a wireless access link, which may beconfigured with a frame structure (e.g., frame structure 300 and/oranother frame structure), a slot format (e.g., slot format 410 and/oranother slot format), and/or the like. The access link may include anuplink and a downlink.

In some cases, the UE may transmit an uplink communication, such as aPUSCH communication, a physical uplink control channel (PUCCH)communication, and/or the like to the BS on the uplink. For example, theUE may perform a random access channel (RACH) procedure tocommunicatively connect with the BS, and may transmit a PUSCHcommunication to the BS as part of the RACH procedure. The RACHprocedure may include a contention-based RACH procedure, acontention-free RACH procedure, a two-step RACH procedure, and/or thelike. The UE may transmit a RACH preamble in a msg1 communication and aradio resource control (RRC) connection request in a msg3 communication(e.g., which may be a PUSCH communication) for a four-step RACHprocedure, may include a msgA communication (e.g., which may be a PUSCHcommunication) in a two-step RACH procedure that includes a RACHpreamble portion and a payload portion, and/or the like.

As another example, the BS may configure the UE with a configured grant,which may schedule periodic and/or semi-persistent resources (e.g.,time-domain resources, frequency-domain resources, and/or the like) fortransmitting uplink communications to the BS, and the UE may use theresources to transmit PUSCH communications to the BS.

The UE may transmit a PUSCH communication in a PRU. As indicated above,a PRU may include a set of time-domain and/or frequency-domain resourcesconfigured to carry PUSCH communications, DMRSs, and/or other uplinkcommunications. In some aspects, the PRU may be associated with aparticular RACH occasion in which the UE transmits a RACH preamble in aRACH procedure, such as for a contention-based RACH procedure. In someaspects, the UE may identify the PRU based at least in part on anindication of the PRU in a downlink control information (DCI)communication (e.g., a compact DCI communication, a group-common DCIcommunication, and/or the like), received from the BS, that configurescontention-free RACH procedure resources. In some aspects, a PRU may beconfigured by a configured grant, in which case the UE may identify thePRU based at least in part on an indication of the PRU in an RRCcommunication received from the BS, a medium access control (MAC)control element (MAC-CE) communication received from the BS, and/or thelike.

In some aspects, a PRU may be included in a PRU group along with one ormore other PRUs. In this case, the UE and/or other UEs may selectrespective PRUs from the PRU group and may transmit PUSCHcommunications, DMRSs, and/or other uplink communications in therespective PRUs.

As shown in FIG. 5, and by reference number 502, the UE may determine totransmit UCI associated with a PUSCH communication (which may bereferred to as UCI-on-PUSCH, UCI piggyback, and/or the like) that is tobe transmitted to the BS. The UE may configure the UCI to identify oneor more transmission parameters associated with transmission of thePUSCH communication. The one or more transmission parameters mayinclude, for example, a modulation coding scheme associated with thePUSCH communication, a redundancy version associated with the PUSCHcommunication, a transport block size associated with the PUSCHcommunication, and/or other parameters associated with coding,modulating, and/or otherwise processing the PUSCH communication fortransmission to the BS.

In some aspects, the one or more transmission parameters may beidentified in the UCI by a modulation coding scheme index and/or anothertype of modulation coding scheme identifier, a redundancy version indexand/or another type of redundancy version identifier, a transport blocksize index and/or another type of transport block size identifier,and/or the like.

In some aspects, the UE may determine to transmit the UCI to identifythe one or more transmission parameters to the BS so that the BS isenabled to demodulate, decode, and/or otherwise process the PUSCHcommunication. In some aspects, the UE may determine to transmit the UCIto identify the one or more transmission parameters based at least inpart on determining that the BS may be unaware of the one or moretransmission parameters, may be unable to determine the one moretransmission parameters, may be unable to determine the one or moretransmission parameters without a large amount of iteration throughcandidate transmission parameters, and/or the like.

For example, the UE may determine to transmit the UCI to identify theone or more transmission parameters based at least in part ondetermining that the PRUs, in the PRU group in which the PRU isincluded, at least partially overlap, fully overlap, are mapped and/orconfigured to the same and/or shared sets of time-domain and/orfrequency-domain resources, and/or the like. As another example, the UEmay determine to transmit the UCI to identify the one or moretransmission parameters based at least in part on determining that thePRUs, in the PRU group in which the PRU is included, are nested suchthat the PRUs start at the same time-domain resource and/or the samefrequency domain resource.

As another example, if the PUSCH communication includes a payloadportion of a msgA communication in a RACH procedure, the UE maydetermine to transmit the UCI to identify the one or more transmissionparameters based at least in part on determining that the combination ofthe PRU and the associated RACH occasion for transmitting the RACHpreamble portion of the msgA communication is associated with aplurality of different candidate transmission parameters and/or aplurality of different combinations of candidate transmissionparameters. As another example, if the PUSCH communication includes apayload portion of a msgA communication in a contention-based RACHprocedure, the UE may determine to transmit the UCI to identify the oneor more transmission parameters based at least in part on determiningthat the contention-based RACH procedure is triggered by acontention-based random access event (e.g., based at least in part ondetermining to perform the contention-based RACH procedure, based atleast in part on detecting a collision in the contention-based RACHprocedure, and/or the like).

As another example, if the PUSCH communication (and/or the PRU in whichthe UE is to transmit the PUSCH communication) is scheduled by aconfigured grant, the UE may determine to transmit the UCI to identifythe one or more transmission parameters based at least in part ondetermining that the signaling communication, that indicates theconfigured grant (e.g., an RRC communication, a MAC-CE communication,and/or the like), permits the UE to select the one or more transmissionparameters from a plurality of different combinations of candidatetransmission parameters.

As further shown in FIG. 5, and by reference number 504, the UE maytransmit the UCI in the PRU based at least in part on determining totransmit the UCI. Moreover, the UE may transmit the PUSCH communicationand an associated DMRS in the PRU along with the UCI. For example, theUE may time-division multiplex and/or frequency division multiplex theUCI, the PUSCH communication, and/or the associated DMRS in the PRU.

In this way, the BS may receive the UCI, the PUSCH communication, andthe DMRS, may identify the one or more transmission parameters based atleast in part on the UCI, and may demodulate, decode, and/or otherwiseprocess the PUSCH communication based at least in part on the one ormore transmission parameters, DMRS, and/or the like. This increases theefficiency of processing the uplink communication at the BS (e.g., byreducing demodulation and/or decoding attempts based at least in part oncandidate transmission parameters), decreases dropped and/or delayeduplink communications, decreases retransmissions, and/or the like.

As indicated above, FIG. 5 is provided as one or more examples. Otherexamples may differ from what is described with respect to FIG. 5.

FIG. 6 is a diagram illustrating one or more examples 600 oftransmitting UCI over PUSCH, in accordance with various aspects of thepresent disclosure.

As shown in FIG. 6, and by reference number 602, a UE may channel codeand/or rate match PUSCH bits and cyclic redundancy check (CRC) bitsappended to the PUSCH bits. The PUSCH bits may be one or more data bitsthat are to be included in a PUSCH communication that the UE is totransmit to a BS. In some aspects, the UE may select a transport blocksize and/or redundancy version for channel coding and/or rate matchingthe PUSCH bits and CRC bits.

In some aspects, the UE may channel code the PUSCH bits and CRC bitsusing one or more channel codes. For example, the UE may channel codethe PUSCH bits and the CRC bits based at least in part on a repetitioncode, a simplex code, a Reed-Muller code, and/or other types of codes.

As further shown in FIG. 6, and by reference number 604, the UE mayscramble the PUSCH bits and CRC bits. For example, the UE may scramblethe channel coded and/or rate matched PUSCH bits and CRC bits based atleast in part on an identifier associated with the UE, such as a radionetwork temporary identifier (RNTI) (e.g., a group common RNTI (GC-RNTI,a random access RNTI (RA-RNTI), a cell RNTI (C-RNTI), and/or the like).In some aspects, the UE may scramble the PUSCH bits and CRC bits basedat least in part on a scrambling identifier, which may be determinedbased at least in part on an equation having a form similar to that ofEquation 1:

scrambling_ID_UCI=(K ₁*preamble_resource_index)+(K₂*DMRS_resource_index)+(K ₃*PRU_resource_index)   Equation 1

where scrambling_ID_UCI is the scrambling identifier,preamble_resource_index is an index associated with the RACH occasion inwhich the UE is to transmit a RACH preamble, DMRS_resource_index is theindex associated with the time-frequency resource in which the UE is totransmit a DMRS associated with the PUSCH communication,PRU_resource_index is the index associated with the PRU in which the UEis to transmit the PUSCH communication, and K₁, K₂, and K₃ are positivescaling constants. The UE may initialize a scrambling sequence based atleast in part on the scrambling identifier.

As further shown in FIG. 6, and by reference number 606, the UE maylinearly modulate the PUSCH bits and CRC bits to generate one or moreOFDM symbols that carry the PUSCH bits and CRC bits. In some aspects,the UE may select a modulation coding scheme for modulating the PUSCHbits and CRC bits. The modulation coding scheme may include, forexample, binary phase-shift keying (BPSK), quadrature phase-shift keying(QPSK), quadrature amplitude modulation (QAM), and/or other types ofmodulation coding schemes.

As further shown in FIG. 6, and by reference number 608, the UE maygenerate UCI bits that are to be included in UCI that indicatestransmission parameters for the channel coding, rate matching, bitscrambling, linear modulation, and/or the like described above. The UCIbits may indicate, for example, a modulation coding scheme indexassociated with the modulation coding scheme used to modulate the PUSCHbits and CRC bits, a redundancy version index associated with theredundancy version selected for rate matching the PUSCH bits and the CRCbits, a transport block size index associated with the transport blocksize for channel coding the PUSCH bits and the CRC bits, and/or thelike.

In some aspects, the UE may also channel code, rate match, bit scramble,and/or linearly modulate the UCI bits in a manner similar to the PUSCHbits and CRC bits described above in connection with reference numbers602-606. Moreover, the UE may append or attach CRC bits to the UCI bits.In this case, the UE may channel code the UCI bits and associated CRCbits based at least in part on the same channel code or differentchannel codes, based at least in part on the same scrambling identifieror different scrambling identifiers, based at least in part on the samemodulation order or different modulation orders, and/or the like.

In some aspects, to ensure that the UCI is sufficiently compact toreduce the overhead of the UCI, the UE may determine whether thequantity of UCI bits, needed to indicate the one or more transmissionparameters in the UCI, satisfies a bit quantity threshold. If the UEdetermines that the quantity of bits satisfies the bit quantitythreshold, the UE may generate a scrambling identifier for the UCI bitsbased at least in part on Equation 1 above. In some aspects, if the UEdetermines that the quantity of bits does not satisfy the bit quantitythreshold, the UE may truncate or reduce the quantity of the UCI bits inorder to reduce the overhead of the UCI. For example, the UE maytruncate the UCI bits based at least in part on an equation having aform similar to that of Equation 2:

Truncated_Bits=[log₂ ^(W)]−N   Equation 2

where W is the quantity of possible combinations for the one or moretransmission parameters and N is the bit quantity threshold. In someaspects, the UE may determine whether the quantity of UCI bits, neededto indicate the one or more transmission parameters in the UCI,satisfies the bit quantity threshold based at least in part ondetermining whether W>2^(N). In some aspects, if the UE determines totruncate or reduce the quantity of bits included in the UCI bits, the UEmay scramble the UCI bits by initializing a scrambling sequence (e.g., apseudo random sequence) based at least in part on a sequence identifierthat is determined based at least in part on an equation having a formsimilar to that of Equation 3:

scrambling_ID_UCI=(K ₁*preamble_resource_index)+(K₂*DMRS_resource_index)+(K ₃*PRU_resource_index)+K ₃   Equation 3

where K₃ represents a binary to decimal conversion of the truncated orreduced quantity of bits included in the UCI bits.

Additionally and/or alternatively, the UE may apply a CRC mask in orderto mask the CRC bits attached to the UCI bits, where the CRC mask may begenerated based at least in part on a pseudo random sequence that inturn may be based at least in part on the truncated or reduced quantityof bits included in the UCI bits. In some aspects, the pseudo randomsequence used to generate the CRC mask, and the pseudo random sequenceused to scramble the UCI bits, may be the same pseudo random sequence ordifferent pseudo random sequences.

As further shown in FIG. 6, and by reference number 610, the UE maygenerate a DMRS that is to be transmitted in the PRU with the PUSCHcommunication and the UCI. In some aspects, the DMRS may be generatedand transmitted such that the BS may perform one or more measurements ofthe DMRS to determine the uplink channel on which the PUSCHcommunication is to be transmitted. In some aspects, if the PUSCHcommunication is a payload portion of a msgA communication in a two-stepRACH procedure, the UE may generate the DMRS based at least in part on apreamble sequence identifier associated with a RACH preamble portion ofthe msgA communication.

As further shown in FIG. 6, and by reference number 612, the UE maymultiplex the PUSCH communication, the UCI, and/or the DMRS in the PRU.For example, the UE may time division multiplex and/or frequencydivision multiplex the OFDM symbols representing the PUSCHcommunication, the UCI, and/or the DMRS in the PRU. As further shown inFIG. 6, and by reference number 614, the UE may map the OFDM symbolsrepresenting the PUSCH communication, the UCI, and the DMRS to the OFDMsymbols included in the PRU. The UE may transmit the OFDM symbols in thePRU to the BS to transmit the PUSCH communication, the UCI, and/or theDMRS to the BS.

As indicated above, FIG. 6 is provided as one or more examples. Otherexamples may differ from what is described with respect to FIG. 6.

FIG. 7 is a diagram illustrating one or more examples 700 oftransmitting UCI over PUSCH, in accordance with various aspects of thepresent disclosure. As shown in FIG. 7, an example PRU associated with aUE may include a multiplexed (e.g., time division multiplexed and/orfrequency division multiplexed) DMRS, PUSCH communication, and UCI. TheUCI may be configured to indicate one or more transmission parametersassociated with the PUSCH communication, as described above inconnection with FIGS. 5 and 6. In some aspects, modulation symbols ofthe PUSCH communication may be punctured or rate matched in the PRUaround the one or more subcarriers and/or OFDM symbols of the UCI.

As shown in FIG. 7, the PRU may include a set of time-domain resources(e.g., T_(PRU)) and/or a set of frequency-domain resources (e.g.,F_(PRU)). The UCI may occupy a subset of the time-domain resourcesand/or a set of frequency-domain resources included in the PRU (e.g.,T_(UCI) and F_(UCI)). As further shown in FIG. 7, the modulation symbolsof the UCI may be transmitted in one or more OFDM symbols adjacent tothe OFDM symbols in which the DMRS is transmitted in the PRU. In someaspects, the starting OFDM symbol and/or starting subcarrier of the UCImay be the same across PRUs in a PRU group in which the PRU is included(e.g., may start at a semi-persistent OFDM symbol index and/orsubcarrier index of the PRU). In some aspects, the quantity of OFDMsymbols and subcarriers across which the UCI is transmitted may be thesame across PRUs in a PRU group in which the PRU is included.

As indicated above, FIG. 7 is provided as one or more examples. Otherexamples may differ from what is described with respect to FIG. 7.

FIG. 8 is a diagram illustrating one or more examples 800 oftransmitting UCI over PUSCH, in accordance with various aspects of thepresent disclosure. As shown in FIG. 8, an example PRU group may includea plurality of PRUs that are nested in the PRU group such that the PRUseach start at the same starting time-frequency resource (e.g., the sametime-domain resource and the same frequency resource) regardless ofwhether the PRUs are the same size or different sizes in the time domainand/or frequency domain. Each PRU may be associated with a respective UE(e.g., UE 1, UE 2, UE 3, and so on). Moreover, the PRUs in the PRU groupmay be configured such that respective UCIs transmitted in each PRUoccupy the same quantity of OFDM symbols and/or subcarriers, such thatrespective UCIs transmitted in each PRU occupy the same OFDM symbolsand/or subcarriers across the PRUs, and/or the like.

As further shown in FIG. 8, the modulation symbols of the UCIs in eachPRU in the PRU group may be transmitted in one or more OFDM symbolsadjacent to the OFDM symbols in which the DMRS is transmitted in thePRUs. In some aspects, the starting OFDM symbol and/or startingsubcarrier of each UCI may be the same across the PRUs in the PRU group(e.g., may start at a semi-persistent OFDM symbol index and/orsubcarrier index of the PRU). In some aspects, the quantity of OFDMsymbols and subcarriers across which the UCI is transmitted may be thesame across the PRUs in the PRU group. In this way, a BS maysemi-statically configure the PRUs in the PRU group, the UCIs in thePRU, and/or the like (e.g., based at least in part on a semi-staticpayload construction and resource mapping rule) to reduce thedetection/decoding complexity of the BS.

As indicated above, FIG. 8 is provided as one or more examples. Otherexamples may differ from what is described with respect to FIG. 8.

FIG. 9 is a diagram illustrating an example process 900 performed, forexample, by a UE, in accordance with various aspects of the presentdisclosure. Example process 900 is an example where a UE (e.g., UE 120)performs operations associated with transmitting UCI over PUSCH.

As shown in FIG. 9, in some aspects, process 900 may include determiningto transmit UCI that identifies one or more parameters associated with atransmission of a PUSCH communication in a PRU (block 910). For example,the UE (e.g., using receive processor 258, transmit processor 264,controller/processor 280, memory 282, and/or the like) may determine totransmit UCI that identifies one or more parameters associated with atransmission of a PUSCH communication in a PRU, as described above.

As further shown in FIG. 9, in some aspects, process 900 may includetransmitting the UCI in the PRU based at least in part on determining totransmit the UCI (block 920). For example, the UE (e.g., using receiveprocessor 258, transmit processor 264, controller/processor 280, memory282, and/or the like) may transmit the UCI in the PRU based at least inpart on determining to transmit the UCI, as described above.

Process 900 may include additional aspects, such as any single aspect orany combination of aspects described below and/or in connection with oneor more other processes described elsewhere herein.

In a first aspect, the one or more parameters comprise at least one ofan MCS index associated with the PUSCH communication, a redundancyversion associated with the PUSCH communication, or a transport blocksize associated with the PUSCH communication. In a second aspect, aloneor in combination with the first aspect, determining to transmit the UCIcomprises determining to transmit the UCI based at least in part ondetermining that a plurality of PRUs, included in a PRU group in whichthe PRU is included, are mapped to a shared set of time-domain resourcesand frequency-domain resources. In a third aspect, alone or incombination with one or more of the first and second aspects, theplurality of PRUs are of a same time-domain resource size and a samefrequency-domain resource size.

In a fourth aspect, alone or in combination with one or more of thefirst through third aspects, at least a subset of the plurality of PRUsare of at least one of different time-domain resource sizes or differentfrequency-domain resource sizes. In a fifth aspect, alone or incombination with one or more of the first through fourth aspects,determining to transmit the UCI comprises determining to transmit theUCI based at least in part on determining that a plurality of PRUs,included in a PRU group in which the PRU is included, are nested in atime domain and a frequency domain such that the plurality of PRUs sharea same starting time-domain resource and a same startingfrequency-domain resource.

In a sixth aspect, alone or in combination with one or more of the firstthrough fifth aspects, the PUSCH communication includes a payload of amsgA communication in a contention-free two-step RACH procedure, andprocess 900 further comprises receiving an indication of the PRU in aDCI communication, the DCI communication being at least one of a compactDCI communication or a group-common DCI communication. In a seventhaspect, alone or in combination with one or more of the first throughsixth aspects, the PUSCH communication includes a payload of a msgAcommunication in a two-step RACH procedure, and determining to transmitthe UCI comprises determining to transmit the UCI based at least in parton determining that a combination of the PRU and a preamble of the msgAcommunication is associated with a plurality of different combinationsof the one or more parameters.

In an eighth aspect, alone or in combination with one or more of thefirst through seventh aspects, the transmission of the PUSCHcommunication is scheduled by a configured grant, and determining totransmit the UCI comprises determining to transmit the UCI based atleast in part on determining that a signaling communication, thatindicates the configured grant, permits the UE to select the one or moreparameters from a plurality of different combinations of the one or moreparameters. In a ninth aspect, alone or in combination with one or moreof the first through eighth aspects, the transmission of the PUSCHcommunication is triggered by a contention based random access event,and determining to transmit the UCI comprises determining to transmitthe UCI based at least in part on the contention based random accessevent.

In a tenth aspect, alone or in combination with one or more of the firstthrough ninth aspects, the one or more parameters are indicated in theUCI by a plurality of bits, the plurality of bits being encoded by achannel code to form coded bits. In an eleventh aspect, alone or incombination with one or more of the first through tenth aspects, process900 further comprises attaching, prior to channel coding the UCI, one ormore CRC bits to the plurality of bits. In a twelfth aspect, alone or incombination with one or more of the first through eleventh aspects,process 900 further comprises determining that a quantity of bits, ofthe plurality of bits, does not satisfy a bit quantity threshold, andreducing the quantity of bits to a reduced quantity of bits based atleast in part on determining that the quantity of bits does not satisfythe bit quantity threshold.

In a thirteenth aspect, alone or in combination with one or more of thefirst through twelfth aspects, process 900 further comprises at leastone of masking the CRC bits based at least in part on a first pseudorandom sequence that is based at least in part on the reduced quantityof bits, or scrambling the coded bits using a second pseudo randomsequence that is based at least in part on the reduced quantity of bits,and scrambling the UCI based at least in part on the reduced quantity ofbits comprises initializing a scrambling sequence generator based atleast in part on the reduced quantity of bits and scrambling the UCIbased at least in part on the scrambling sequence.

In a fourteenth aspect, alone or in combination with one or more of thefirst through thirteenth aspects, transmitting the UCI in the PRUcomprises transmitting one or more modulation symbols of the UCI in oneor more OFDM symbols adjacent to a transmission of a demodulationreference signal in the PRU and in one or more subcarriers that start ata semi-persistent subcarrier index of the PRU. In a fifteenth aspect,alone or in combination with one or more of the first through fourteenthaspects, a quantity of the one or more subcarriers is a same quantity ofsubcarriers for each PRU included in a PRU group in which the PRU isincluded, and modulation symbols of the PUSCH communication arepunctured or rate matched in the PRU around the one or more subcarriers.

Although FIG. 9 shows example blocks of process 900, in some aspects,process 900 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 9.Additionally, or alternatively, two or more of the blocks of process 900may be performed in parallel.

The foregoing disclosure provides illustration and description, but isnot intended to be exhaustive or to limit the aspects to the preciseform disclosed. Modifications and variations may be made in light of theabove disclosure or may be acquired from practice of the aspects.

As used herein, the term “component” is intended to be broadly construedas hardware, firmware, and/or a combination of hardware and software. Asused herein, a processor is implemented in hardware, firmware, and/or acombination of hardware and software.

As used herein, satisfying a threshold may, depending on the context,refer to a value being greater than the threshold, greater than or equalto the threshold, less than the threshold, less than or equal to thethreshold, equal to the threshold, not equal to the threshold, and/orthe like.

It will be apparent that systems and/or methods described herein may beimplemented in different forms of hardware, firmware, and/or acombination of hardware and software. The actual specialized controlhardware or software code used to implement these systems and/or methodsis not limiting of the aspects. Thus, the operation and behavior of thesystems and/or methods were described herein without reference tospecific software code—it being understood that software and hardwarecan be designed to implement the systems and/or methods based, at leastin part, on the description herein.

Even though particular combinations of features are recited in theclaims and/or disclosed in the specification, these combinations are notintended to limit the disclosure of various aspects. In fact, many ofthese features may be combined in ways not specifically recited in theclaims and/or disclosed in the specification. Although each dependentclaim listed below may directly depend on only one claim, the disclosureof various aspects includes each dependent claim in combination withevery other claim in the claim set. A phrase referring to “at least oneof” a list of items refers to any combination of those items, includingsingle members. As an example, “at least one of: a, b, or c” is intendedto cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combinationwith multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c,a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering ofa, b, and c).

No element, act, or instruction used herein should be construed ascritical or essential unless explicitly described as such. Also, as usedherein, the articles “a” and “an” are intended to include one or moreitems, and may be used interchangeably with “one or more.” Furthermore,as used herein, the terms “set” and “group” are intended to include oneor more items (e.g., related items, unrelated items, a combination ofrelated and unrelated items, and/or the like), and may be usedinterchangeably with “one or more.” Where only one item is intended, thephrase “only one” or similar language is used. Also, as used herein, theterms “has,” “have,” “having,” and/or the like are intended to beopen-ended terms. Further, the phrase “based on” is intended to mean“based, at least in part, on” unless explicitly stated otherwise.

What is claimed is:
 1. A method of wireless communication performed by auser equipment (UE), comprising: determining to transmit uplink controlinformation (UCI) that identifies one or more parameters associated witha transmission of a physical uplink shared channel (PUSCH) communicationin a PUSCH resource unit (PRU); and transmitting the UCI in the PRUbased at least in part on determining to transmit the UCI.
 2. The methodof claim 1, wherein the PUSCH communication includes a payload of a msgAcommunication in a two-step random access channel (RACH) procedure. 3.The method of claim 2, wherein the two-step RACH procedure is acontention-free two-step RACH procedure; and wherein the method furthercomprises: receiving an indication of the PRU in a downlink controlinformation (DCI) communication, wherein the DCI communication is atleast one of: a compact DCI communication, or a group-common DCIcommunication.
 4. The method of claim 2, wherein determining to transmitthe UCI comprises: determining to transmit the UCI based at least inpart on determining that a combination of the PRU and a preamble of themsgA communication is associated with a plurality of differentcombinations of the one or more parameters.
 5. The method of claim 1,wherein the one or more parameters comprise at least one of: amodulation coding scheme index associated with the PUSCH communication,a redundancy version associated with the PUSCH communication, or atransport block size associated with the PUSCH communication.
 6. Themethod of claim 1, wherein determining to transmit the UCI comprises:determining to transmit the UCI based at least in part on determiningthat a plurality of PRUs, included in a PRU group in which the PRU isincluded, are mapped to a shared set of time-domain resources andfrequency-domain resources.
 7. The method of claim 3, wherein theplurality of PRUs are of a same time-domain resource size and a samefrequency-domain resource size.
 8. The method of claim 3, wherein atleast a subset of the plurality of PRUs are of at least one of differenttime-domain resource sizes or different frequency-domain resource sizes.9. The method of claim 1, wherein determining to transmit the UCIcomprises: determining to transmit the UCI based at least in part ondetermining that a plurality of PRUs, included in a PRU group in whichthe PRU is included, are nested in a time domain and a frequency domainsuch that the plurality of PRUs share a same starting time-domainresource and a same starting frequency-domain resource.
 10. The methodof claim 1, wherein the one or more parameters are indicated in the UCIby a plurality of bits, wherein the plurality of bits are encoded by achannel code to form coded bits.
 11. The method of claim 10, furthercomprising: attaching, prior to channel coding the UCI, one or morecyclic redundancy check (CRC) bits to the plurality of bits.
 12. Themethod of claim 11, further comprising: determining that a quantity ofbits, of the plurality of bits, does not satisfy a bit quantitythreshold; and reducing the quantity of bits to a reduced quantity ofbits based at least in part on determining that the quantity of bitsdoes not satisfy the bit quantity threshold.
 13. The method of claim 12,further comprising at least one of: masking the one or more CRC bitsbased at least in part on a first pseudo random sequence that is basedat least in part on the reduced quantity of bits, or scrambling thecoded bits using a second pseudo random sequence that is based at leastin part on the reduced quantity of bits, wherein scrambling the UCIbased at least in part on the reduced quantity of bits comprises:initializing a scrambling sequence generator based at least in part onthe reduced quantity of bits; and scrambling the UCI based at least inpart on the scrambling sequence.
 14. The method of claim 1, whereintransmitting the UCI in the PRU comprises: transmitting one or moremodulation symbols of the UCI in one or more orthogonal frequencydivision multiplexing (OFDM) symbols adjacent to a transmission of ademodulation reference signal in the PRU and in one or more subcarriersthat start at a semi-persistent subcarrier index of the PRU.
 15. Themethod of claim 14, wherein a quantity of the one or more subcarriers isa same quantity of subcarriers for each PRU included in a PRU group inwhich the PRU is included; and wherein modulation symbols of the PUSCHcommunication are punctured or rate matched in the PRU around the one ormore subcarriers.
 16. The method of claim 1, wherein the transmission ofthe PUSCH communication is scheduled by a configured grant; and whereindetermining to transmit the UCI comprises: determining to transmit theUCI based at least in part on determining that a signalingcommunication, that indicates the configured grant, permits the UE toselect the one or more parameters from a plurality of differentcombinations of the one or more parameters.
 17. The method of claim 1,wherein the transmission of the PUSCH communication is triggered by acontention based random access event; and wherein determining totransmit the UCI comprises: determining to transmit the UCI based atleast in part on the contention based random access event.
 18. A userequipment (UE) for wireless communication, comprising: a memory; and oneor more processors coupled with the memory, the memory and the one ormore processors configured to: determine to transmit uplink controlinformation (UCI) that identifies one or more parameters associated witha transmission of a physical uplink shared channel (PUSCH) communicationin a PUSCH resource unit (PRU); and transmit the UCI in the PRU based atleast in part on determining to transmit the UCI.
 19. The UE of claim18, wherein the one or more parameters comprise at least one of: amodulation coding scheme index associated with the PUSCH communication,a redundancy version associated with the PUSCH communication, or atransport block size associated with the PUSCH communication.
 20. The UEof claim 18, wherein the one or more processors, when determining totransmit the UCI, are to: determine to transmit the UCI based at leastin part on determining that a plurality of PRUs, included in a PRU groupin which the PRU is included, are mapped to a shared set of time-domainresources and frequency-domain resources.
 21. The UE of claim 20,wherein the plurality of PRUs are of a same time-domain resource sizeand a same frequency-domain resource size.
 22. The UE of claim 20,wherein at least a subset of the plurality of PRUs are of at least oneof different time-domain resource sizes or different frequency-domainresource sizes.
 23. The UE of claim 18, wherein the one or moreprocessors, when determining to transmit the UCI, are to: determine totransmit the UCI based at least in part on determining that a pluralityof PRUs, included in a PRU group in which the PRU is included, arenested in a time domain and a frequency domain such that the pluralityof PRUs share a same starting time-domain resource and a same startingfrequency-domain resource.
 24. A non-transitory computer-readable mediumstoring one or more instructions for wireless communication, the one ormore instructions comprising: one or more instructions that, whenexecuted by one or more processors of a user equipment (UE), cause theone or more processors to: determine to transmit uplink controlinformation (UCI) that identifies one or more parameters associated witha transmission of a physical uplink shared channel (PUSCH) communicationin a PUSCH resource unit (PRU); and transmit the UCI in the PRU based atleast in part on determining to transmit the UCI.
 25. The non-transitorycomputer-readable medium of claim 24, wherein the one or more parametersare indicated in the UCI by a plurality of bits, wherein the pluralityof bits are encoded by a channel code to form coded bits.
 26. Thenon-transitory computer-readable medium of claim 25, wherein the one ormore instructions, when executed by the one or more processors, furthercause the one or more processors to: attach, prior to channel coding theUCI, one or more cyclic redundancy check (CRC) bits to the plurality ofbits.
 27. The non-transitory computer-readable medium of claim 26,wherein the one or more instructions, when executed by the one or moreprocessors, further cause the one or more processors to: determine thata quantity of bits, of the plurality of bits, does not satisfy a bitquantity threshold; and reduce the quantity of bits to a reducedquantity of bits based at least in part on determining that the quantityof bits does not satisfy the bit quantity threshold.
 28. Thenon-transitory computer-readable medium of claim 26, wherein the one ormore instructions, when executed by the one or more processors, furthercause the one or more processors to at least one of: mask the one ormore CRC bits based at least in part on a first pseudo random sequencethat is based at least in part on the reduced quantity of bits, orscramble the coded bits using a second pseudo random sequence that isbased at least in part on the reduced quantity of bits, whereinscrambling the UCI based at least in part on the reduced quantity ofbits comprises: initializing a scrambling sequence generator based atleast in part on the reduced quantity of bits; and scrambling the UCIbased at least in part on the scrambling sequence.
 29. An apparatus forwireless communication, comprising: means for determining to transmituplink control information (UCI) that identifies one or more parametersassociated with a transmission of a physical uplink shared channel(PUSCH) communication in a PUSCH resource unit (PRU); and means fortransmitting the UCI in the PRU based at least in part on determining totransmit the UCI.
 30. The apparatus of claim 29, wherein the means fortransmitting the UCI in the PRU comprises: means for transmitting one ormore modulation symbols of the UCI in one or more orthogonal frequencydivision multiplexing (OFDM) symbols adjacent to a transmission of ademodulation reference signal in the PRU and in one or more subcarriersthat start at a semi-persistent subcarrier index of the PRU.